Preparation

For the filling:

Put the blackberries in a bowl and mash them with a fork until broken up. Add the jam and mix until combined.

For the pie:

Preheat the oven to 350º.

In a medium bowl, combine cracker crumbs and sugar. Add the butter and stir until combined. Press the crust into the bottom and up the sides of a 9-inch deep-dish pie plate. Bake for 7 to 8 minutes. Cool completely before filling.

Spoon the blackberry mixture into the crust. Top with the whipped topping and serve.

Preparation

For the filling:
Put the blackberries in a bowl and mash them with a fork until broken up. Add the jam and mix until combined.
For the pie:
Preheat the oven to 350º.
In a medium bowl, combine cracker crumbs and sugar. Add the butter and stir until combined. Press the crust into the bottom and up the sides of a 9-inch deep-dish pie plate. Bake for 7 to 8 minutes. Cool completely before filling.
Spoon the blackberry mixture into the crust. Top with the whipped topping and serve.